From 2d5024a9e97337874d8d7aa1d6a54ed1c917c5a0 Mon Sep 17 00:00:00 2001 From: Mauro Carvalho Chehab Date: Mon, 14 Sep 2009 10:23:20 -0300 Subject: [PATCH] V4L/DVB (12825): tm6000: I2C reading operations is not reliable on tm6000 tm6000 sometimes can't read from i2c, but this is currently required for tuner-xc2028 to work. This patch adds an option to tuner-xc2028 to not rely on i2c reading. Signed-off-by: Mauro Carvalho Chehab Signed-off-by: Mauro Carvalho Chehab --- drivers/media/common/tuners/tuner-xc2028.c | 10 ++++++++-- drivers/media/common/tuners/tuner-xc2028.h | 1 + drivers/staging/tm6000/tm6000-cards.c | 1 + 3 files changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/media/common/tuners/tuner-xc2028.c b/drivers/media/common/tuners/tuner-xc2028.c index 8d2907f38a94..53f0fbb33cc6 100644 --- a/drivers/media/common/tuners/tuner-xc2028.c +++ b/drivers/media/common/tuners/tuner-xc2028.c @@ -813,8 +813,14 @@ check_device: /* Check firmware version against what we downloaded. */ if (priv->firm_version != ((version & 0xf0) << 4 | (version & 0x0f))) { - tuner_err("Incorrect readback of firmware version.\n"); - goto fail; + if (!priv->ctrl.read_not_reliable) { + tuner_err("Incorrect readback of firmware version.\n"); + goto fail; + } else { + tuner_err("Returned an incorrect version. However, " + "read is not reliable enough. Ignoring it.\n"); + hwmodel = 3028; + } } /* Check that the tuner hardware model remains consistent over time. */ diff --git a/drivers/media/common/tuners/tuner-xc2028.h b/drivers/media/common/tuners/tuner-xc2028.h index e116071810e0..9778c96a5006 100644 --- a/drivers/media/common/tuners/tuner-xc2028.h +++ b/drivers/media/common/tuners/tuner-xc2028.h @@ -40,6 +40,7 @@ struct xc2028_ctrl { unsigned int vhfbw7:1; unsigned int uhfbw8:1; unsigned int disable_power_mgmt:1; + unsigned int read_not_reliable:1; unsigned int demod; enum firmware_type type:2; }; diff --git a/drivers/staging/tm6000/tm6000-cards.c b/drivers/staging/tm6000/tm6000-cards.c index c0bb3ec35480..23f9672d6937 100644 --- a/drivers/staging/tm6000/tm6000-cards.c +++ b/drivers/staging/tm6000/tm6000-cards.c @@ -189,6 +189,7 @@ static void tm6000_config_tuner (struct tm6000_core *dev) ctl.fname = "tm6000-xc3028.fw"; ctl.mts = 1; + ctl.read_not_reliable = 1; xc2028_cfg.tuner = TUNER_XC2028; xc2028_cfg.priv = &ctl; -- 2.30.2